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Application:
CORE
IRQA Mode
IAL1 IAL0 Enabled IPL
0
0
No
—
0
1
Yes
1
0
Yes
1
1
Yes
IRQB Mode
IBL1 IBL0 Enabled IPL
0
0
No
—
0
1
Yes
1
0
Yes
1
1
Yes
Codec IPL
0 = Lowest Level
3 = Unmaskable
Host IPL
0 = Lowest Level
3 = Unmaskable
SSI0 IPL
0 = Lowest Level
3 = Unmaskable
SSI1 IPL
0 = Lowest Level
3 = Unmaskable
Timer IPL
0 = Lowest Level
3 = Unmaskable
Interrupt Priority Register (IPR)
X:$FFDF Read/Write
Reset = $0000
MOTOROLA
DSP56156 Core Programming Sheet
IAL2 Trigger
0
Level
0
1
Neg. Edge
1
2
IBL2 Trigger
0
Level
0
1
Neg. Edge
1
2
15 14 13 12 11 10
TL1 TL0
Figure C-4 Interrupt Priority Register (IPR)
PROGRAMMING SHEETS
9
8
S1L1 S1L0
S0L1 S0L0 HL1 HL0 CL1 CL0 IBL2 IBL1 IBL0 IAL2 IAL1 IAL0
Date:
Programmer:
Sheet 2 of 3
7
6
5
4
3
2
= Reserved, Program as zero
*
C - 19
1
0
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